EPSON TERMINAL PRINTER

EPSON Stylus Color 300

SERVICE MANUAL

EPSON

4007996

„

All rights reserved. No part of this manual may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SEIKO

EPSON CORPORATION.

„

The contents of this manual are subject to change without notice.

„

All effort have been made to ensure the accuracy of the contents of this manual.

However, should any errors be deteced, SEIKO EPSON would greatly appreciate being informed of them.

„

The above not withstanding SEIKO EPSON CORPORATION can assume no responsibility for any errors in this manual or the consequences thereof.

EPSON is a registered trademark of SEIKO EPSON CORPORATION.

General Notice: Other product names used herein are for identification purpose only and may be trademarks or registered trademarks of their respective owners. EPSON disclaims any and all rights in those marks.

Copyright © 1996 SEIKO EPSON CORPORATION. Printed in Japan.

PRECAUTIONS

Precautionary notations throughout the text are categorized relative to 1)Personal injury and

2) damage to equipment.

DANGER Signals a precaution which, if ignored, could result in serious or fatal personal injury. Great caution should be exercised in performing procedures preceded by DANGER Headings.

WARNING Signals a precaution which, if ignored, could result in damage to equipment.

The precautionary measures itemized below should always be observed when performing repair/maintenance procedures.

DANGER

1. ALWAYS DISCONNECT THE PRODUCT FROM THE POWER SOURCE AND

PERIPHERAL DEVICES PERFORMING ANY MAINTENANCE OR REPAIR

PROCEDURES.

2. NOWORK SHOULD BE PERFORMED ON THE UNIT BY PERSONS UNFAMILIER

WITH BASIC SAFETY MEASURES AS DICTATED FOR ALL ELECTRONICS

TECHNICIANS IN THEIR LINE OF WORK.

3. WHEN PERFORMING TESTING AS DICTATED WITHIN THIS MANUAL, DO NOT

CONNECT THE UNIT TO A POWER SOURCE UNTIL INSTRUCTED TO DO SO.

WHEN THE POWER SUPPLY CABLE MUST BE CONNECTED, USE EXTREME

CAUTION IN WORKING ON POWER SUPPLY AND OTHER ELECTRONIC

COMPONENTS.

WARNING

1. REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON

CERTIFIED REPAIR TECHNICIAN.

2. MAKE CERTAIN THAT THE SOURCE VOLTAGES IS THE SAME AS THE RATED

VOLTAGE, LISTED ON THE SERIAL NUMBER/RATING PLATE. IF THE EPSON

PRODUCT HAS A PRIMARY AC RATING DIFFERENT FROM AVAILABLE POWER

SOURCE, DO NOT CONNECT IT TO THE POWER SOURCE.

3. ALWAYS VERIFY THAT THE EPSON PRODUCT HAS BEEN DISCONNECTED FROM

THE POWER SOURCE BEFORE REMOVING OR REPLACING PRINTED CIRCUIT

BOARDS AND/OR INDIVIDUAL CHIPS.

4. IN ORDER TO PROTECT SENSITIVE MICROPROCESSORS AND CIRCUITRY, USE

STATIC DISCHARGE EQUIPMENT, SUCH AS ANTI-STATIC WRIST STRAPS, WHEN

ACCESSING INTERNAL COMPONENTS.

5. REPLACE MALFUNCTIONING COMPONENTS ONLY WITH THOSE COMPONENTS

BY THE MANUFACTURE; INTRODUCTION OF SECOND-SOURCE ICs OR OTHER

NONAPPROVED COMPONENTS MAY DAMAGE THE PRODUCT AND VOID ANY

APPLICABLE EPSON WARRANTY.

PREFACE

This manual describes basic functions, theory of electrical and mechanical operations, maintenance and repair procedures of EPSON Stylus Color 300. The instructions and procedures included herein are intended for the experienced repair technicians, and attention should be given to the precautions on the preceding page. The chapters are organized as follows:

CHAPTER 1.

PRODUCT DESCRIPTIONS

Provides a general overview and specifications of the product.

CHAPTER 2.

OPERATING PRINCIPLES

Describes the theory of electrical and mechanical operations of the product.

CHAPTER 3.

TROUBLESHOOTING

Provides the step-by-step procedures for troubleshooting.

CHAPTER 4.

DISASSEMBLY AND ASSEMBLY

Describes the step-by-step procedures for disassembling and assembling the product.

CHAPTER 5.

ADJUSTMENTS

Provides Epson-approved methods for adjustment.

CHAPTER 6.

MAINTENANCE

Provides preventive maintenance procedures and the lists of Epson-approved lubricants and adhesives required for servicing the product.

APPENDIX

Provides the following additional information for reference:

• Connector pin assignments

• Electric circuit boards components layout

• Exploded diagram

• Electrical circuit boards schematics

Revision

A

Issued

July 2, 1997

REVISION SHEET

Contents

First issue

TABLE OF CONTENTS

CHAPTER 1.PRODUCT DESCRIPTIONS

CHAPTER 2.OPERATION PRINCIPLES

CHAPTER 3.DISASSEMBLY AND ASSEMBLY

CHAPTER 4.ADJUSTMENT

CHAPTER 5.TROUBLESHOOTING

CHAPTER 6.MAINTENANCE

APPENDIX

CHAPTER 1

PRODUCT DESCRIPTIONS

1.1 FEATURES ...................................................................................... 1-1

1.2 SPECIFICATIONS ........................................................................... 1-2

1.2.1 Printing Specifications.......................................................... 1-2

1.2.2 Software Specifications ........................................................ 1-3

1.2.3 Paper Handling ...................................................................... 1-4

1.2.4 Paper Specifications ............................................................. 1-4

1.2.5 Printable Area ........................................................................ 1-6

1.2.6 PG Adjust Lever Setting........................................................ 1-7

1.2.7 Paper Select Lever Setting ................................................... 1-7

1.2.8 Ink Cartridge Specification ................................................... 1-8

1.2.9 Electrical Specifications ....................................................... 1-9

1.2.10 Environmental Conditions .................................................. 1-9

1.2.11 Reliability ............................................................................ 1-10

1.2.12 Acoustic Noise................................................................... 1-10

1.2.13 Safety Approvals................................................................ 1-10

1.2.14 CE Marking......................................................................... 1-10

1.2.15 Physical Specifications ..................................................... 1-11

1.3 INTERFACE SPECIFICATION ...................................................... 1-12

1.4 OPERATIONS................................................................................ 1-12

1.4.1 Control Panel ....................................................................... 1-12

1.4.1.1 Buttons....................................................................... 1-12

1.4.1.2 LED Indicators ........................................................... 1-14

1.5 MAIN COMPONENTS ................................................................... 1-15

1.5.1 Printer Mechanism .............................................................. 1-15

1.5.2 Main Control Board (C224 MAIN Board)............................ 1-15

1.5.3 Power Supply Unit (C160 PSB/PSE Board)....................... 1-15

1.5.4 Housing ................................................................................ 1-15

Chapter 1 Product Descriptions

1.1 FEATURES

The EPSON Stylus Color 300 printer is a color ink jet printer that comes with standard four colors (Black and CMY) printhead. The major features of this printer are:

‰

Standard four-colors printing.

Both black and color (CMY) print nozzles are built in one-piece printhead.

‰

High-quality color printing

360 dpi (Horizontal/Vertical) printing and semi-720 dpi (Vertical only) printing

‰

High-speed printing

200 CPS at 10CPI (Pica) text printing in Black color.

‰

Standard Bi-directional Parallel Interface (IEEE1284 Nibble mode)

Rev. A

1-1

EPSON Stylus Color 300 Service Manual

1.2 SPECIFICATIONS

This section describes the product specifications for EPSON Stylus Color 300.

1.2.1 Printing Specifications

Print system:

Nozzle configuration:

On-demand ink jet printer

Black: 31 nozzles

(11 nozzles x 2 columns and 10 nozzles x 1 column)

Color: 11 nozzles / color

16/360"

(1.1289mm)

104/360"

(7.3378mm)

104/360"

(7.3378mm)

16/360"

(1.1289mm)

#31 #M11

#C11 #Y11 #B30

#29

Print direction:

Print speed:

Printable column:

Character Table:

Typeface:

Input data buffer:

#B3

#B2

#B1 #M1

#C1 #Y1

16/360"

(1.1289mm)

Viewed from the back of the printhead

Figure 1-1. Printhead Nozzle Configuration

Bi-directional printing with logical-seeking

Text: 200 CPS (LQ/10CPI in Black color)

Graphics: 20 IPS (at 360DPI)

Text: 80 columns (10CPI)

Graphics: 2880 dot (at 360DPI)

No table and include only the following characters:

„

Alphabet [A to Z] (code 41H ~ 5AH)

„

Number [0 to 9] (code 30H ~ 39H)

„

SPACE (code 20H)

„

Symbol [#] (code 23H)

Bitmap LQ / EPSON Courier (10CPI)

25Kbyte

1-2

Rev. A

Chapter 1 Product Descriptions

1.2.2 Software Specifications

Printer Language: Exclusive control codes for EPSON Stylus Color 300

EPSON Remote Command

Control Code: <Character mode>

General operation:

Paper feeding:

Carriage operation

EEPROM Control

Initialize printer

Form feed

Line feed

Carriage return

ESC @

FF

LF

CR

ESC |

<Graphics mode>

General operation: Initialize printer

Uni-directional printing

CSF Mode control

Paper feeding: Form feed

Line feed

Line spacing

Carriage return Carriage operation:

Page formatting: Page length

Top/Bottom margin

Print position control: Horizontal print position

Spacing:

Graphics:

Vertical print position

Define unit

Graphics mode

Raster graphics

Color control: Printing color

ESC @

ESC U

ESC EM

FF

LF

ESC +

CR

ESC (C

ESC (c

ESC $, ESC ¥

ESC (V, ESC (v

ESC (U

ESC (G

ESC . (

∗

1)

ESC r (

∗

2)

Note) EPSON Stylus Color 300 requires the specific printer driver for proper printing operation and control, and use of other printer driver could result in improper printing.

∗

1: Works only with unique parameters.

∗

2: It works only as a print buffer select command.

Rev. A

1-3

EPSON Stylus Color 300 Service Manual

1.2.3 Paper Handling

Feeding method:

Paper path:

Line spacing:

Paper feeding speed:

Friction feed with built-in ASF

Rear-top entrance / Front eject

1/6 inch or programmable in 1/360 inch minimum increments.

102 mS (at 1/6 inch paper feed pitch)

1.2.4 Paper Specifications

‰ Cut sheet

„

Size:

„

„

„

A4

LETTER

B5

LEGAL

Statement

Executive

Thickness:

Weight:

Quality:

‰

Envelope

„

Size:

Type

Table 1-1. Paper Size - Cut Sheet

Width

210 mm

(8.3”)

216 mm

(8.5”)

182 mm

(7.2”)

216 mm

(8.5”)

139.7 mm

(5.5”)

184.2 mm

(7.25”)

Length

297 mm

(11.7”)

279 mm

(11.0”)

257 mm

(10.1”)

356 mm

(14.0”)

215.9 mm

(8.5”)

266.7 mm

(10.5”)

0.08 ~ 0.11 mm (0.003 ~ 0.004”)

64 ~ 90 g/m² (17 ~ 24 lb.)

Plain paper, Recycled paper, EPSON special medias

No.10

DL

Type

Table 1-2. Paper Size - Envelope

Width

241 mm

(9

1

/

2

”)

220 mm

(8.7”)

Length

104.8 mm

(4

1

/

8

”)

110 mm

(4.3”)

„

Thickness:

„

Weight:

„

Quality:

0.16 ~ 0.52 mm (0.006 ~ 0.020”)

45 ~ 90 g/m²

BOND paper, Plain paper, Airmail

Note)

∗

Envelope printing is allowed only under normal temperature/humidity condition.

∗

Set the longer side of envelope horizontally at setting.

1-4

Rev. A

Chapter 1 Product Descriptions

‰

Others

„

Size:

Table 1-3. Paper Size - Special Media

Type

Transparency (A4)

Transparency (LETTER)

Glossy Paper (A4)

Glossy Paper (LETTER)

Index Card (A6 size)

Width

210 mm

(8.3”)

216 mm

(8.5”)

210 mm

(8.3”)

216 mm

(8.5”)

105 mm

(4.1”)

Length

297 mm

(11.7”)

279 mm

(11.0”)

297 mm

(11.7”)

279 mm

(11.0”)

148 mm

(5.8”)

„

Quality:

„

Thickness:

Exclusive transparency/Glossy Paper

0.23 mm (0.0091”) for Index Card

Note) Set the paper thickness lever to “THICK PAPER” position for index card printing.

Rev. A

1-5

EPSON Stylus Color 300 Service Manual

1.2.5 Printable Area

The maximum printable area with each type of paper is summarized in table below.

Table 1-4. Printable Area

A4

Type

LETTER

LEGAL

A6

B5

Statement

Executive

No.10

DL

PW

(typ.)

210 mm

(8.3”)

216 mm

(8.5”)

216 mm

(8.5”)

105 mm

(4.1”)

182 mm

(7.2”)

139.7 mm

(5.5”)

184.2 mm

(7.25”)

241 mm

(9.5”)

220 mm

(8.7”)

PL

(typ.)

297 mm

(11.7”)

279 mm

(11.0”)

356 mm

(14”)

148 mm

(5.8”)

257 mm

(10.1”)

215.9 mm

(8.5”)

266.7 mm

(10.5”)

105 mm

(4.1”)

110 mm

(4.3”)

LM

(Min.)

3.0 mm

(0.12”)

⇑

⇑

⇑

⇑

⇑

⇑

⇑

⇑

RM

(Min.)

3.0 mm

(0.12”)

⇑

⇑

⇑

⇑

⇑

⇑

33.8 mm

(1.33”)

13.8 mm

(0.54”)

TM

(Min.)

3.0 mm

(0.12”)

⇑

⇑

⇑

⇑

⇑

⇑

⇑

⇑

BM

(Min.)

14.0 mm

(0.55”)

⇑

⇑

⇑

⇑

⇑

⇑

⇑

⇑

PW

CUT SHEET

LM RM

Printable Area

PW

ENVELOPE

LM

Printable Area

Figure 1-2. Printable Area

RM

1-6

Rev. A

Chapter 1 Product Descriptions

1.2.6 PG Adjust Lever Setting

The paper-gap (PG); a space between the printhead nozzle surface annd the paper surface, can be adjusted to the appropriate level by the PG adjust lever which located underneath the printer cover.

Paper Type

Cut Sheet

Envelope

Table 1-5. PG Adjust Lever Setting

Lever Position

Front

(“0” position)

Rear

(“+” position)

Gap Setting

0 mm

+0.62 mm

1.2.7 Paper Select Lever Setting

The built-in ASF is equipped with the adjust lever and the position of lever should be set to appropriate position according to the type of paper used for the printing.

Table 1-6. Paper Select Lever Setting

Paper Feeding

Source Select

Lever

Position

ASF

Manual

Insertion

Thick

Normal

Thick

Normal

Cut Sheet

No

OK

OK

No

Paper Type

Envelope

OK

No

OK

No

Paper Thickness Lever

(Forward position: Normal

Backward position: Thick paper)

Rev. A

Paper Thickness Lever (Locate underneath the printer cover)

(Forward position: "0" Normal

Backward position: "+" Envelopes)

Figure 1-3. PG Adjust Lever and Paper Select Lever

1-7

EPSON Stylus Color 300 Service Manual

1.2.8 Ink Cartridge Specification

Type:

Color:

Print capacity:

Exclusive cartridge

Black and CMY (Cyan, Magenta, Yellow)

220 pages (360 DPI / 5% duty for each color on A4)

450 pages (ISO/IEC10561 LETTER pattern at 360 DPI monochrome printing on A4)

Validity: 2 years (in sealed package)

6 months (out of package)

Storage conditions: Transit (Package): -30

∼

60

°

C

(120 hours or less at 60

°

C and a month or less at 40

°

C)

Storage (Package): -30

∼

40

°

C

(A month or less at 40

°

C)

After installation: -20

∼

40

°

C

(A month or less at 40

°

C)

Weight:

Dimensions:

69.3 gram (internal ink amount = 41.1g)

45.9 (W)

×

56.5 (D)

×

38.5

±

0.3 (H) mm

1-8

45.9 mm

Yellow

Magenta

Cyan

Black

Figure 1-4. Ink Cartridge

38.5 mm

Rev. A

Chapter 1 Product Descriptions

1.2.9 Electrical Specifications

Item

Rated Voltage

Input Voltage

Range

Rated Frequency

Range

Input Frequency

Range

Rated Current

Table 1-7. Electrical Specification

120V Version

120 VAC

103.5

∼

132 V

220

∼

240V Version

220

∼

240 VAC

198

∼

264 V

50

∼

60 Hz

49.5

∼

60.5 Hz

50

49.5

∼

∼

60 Hz

60.5 Hz

Power

Consumption

Insulation

Resistance

Dielectric

Strength

0.5 A

(Max. 0.5 A)

Approx. 15 W

(ISO/IEC10561 LETTER pattern)

10 M

Ω

, Min.

(applying 500 VDC between AC line and chassis)

AC 1000 Vrms for 1 min. or

AC 1200 Vrms for 1 sec.

(between AC line and chassis)

0.3 A

(Max. 0.3 A)

Approx. 15 W

(ISO/IEC10561 LETTER pattern)

Energy Star Compliant

10 M

Ω

, Min.

(applying 500 VDC between AC line and chassis)

AC 1500 Vrms for 1 min.

(between AC line and chassis)

1.2.10 Environmental Conditions

Condition

Temperature

Humidity

Shock

Resistance

Vibration

Resistance

Table 1-8. Environmental Conditions

Operating

10

∼

35

°

C

∗

3

20

∼

80 %

∗

2/3

1G

(within 1 ms)

0.15G

Non operating

-20

∼

60

°

C

∗

1

5

∼

85 %

∗

1/2

2G

(within 2 ms)

∗

1

0.50G

∗

1

Note)

∗

1: Applicable when the unit is in a shipping container.

∗

2: Without condensation.

∗

3: The unit should be operated within the range shown in figure below.

Humidity

(%)

80

55

20

10 27 35

Temperature

(°C)

Figure 1-5. Temperature and Humidity Range

Rev. A

1-9

EPSON Stylus Color 300 Service Manual

1.2.11 Reliability

Total Print Volume: 10,000 pages (A4 / LETTER)

Printhead Life: 1000 million dots / nozzle (Black and CMY)

1.2.12 Acoustic Noise

Level: Approx. 45 dB(A) (according to ISO7779)

1.2.13 Safety Approvals

Item

Table 1-9. Safety Approvals

120V Version

Safety Standard UL1950 with D3

CSA C22.2 No.950 with D3

EMI FCC part 15 subpart B class B

CSA C108.8 class B

220

∼

240V Version

EN 60950 (TÜV, NEMKO)

EN55022 (CISPR Pub.22) class B

AS/NSZ 3548 class B

1.2.14 CE Marking

[220 ~ 240V Version only]

Low Voltage Directive 73/26/EEC: EN60950

EMC Directive89/336/EEC: EN55022 Class B

EN61000-3-2

EN61000-3-3

EN50082-1

IEC801-2

IEC801-3

IEC801-4

1-10

Rev. A

Chapter 1 Product Descriptions

1.2.15 Physical Specifications

Dimensions:

Weight:

397 (W) × 319 (D) × 269 (H) mm

(operating condition)

3.9 Kg (exclude the printhead and the ink cartridge)

319 mm

397 mm

Figure 1-6. Dimensions

Rev. A

1-11

EPSON Stylus Color 300 Service Manual

1.3 INTERFACE SPECIFICATION

Refer to the service manual of EPSON Stylus Color 200 / Stylus 200 for details.

1.4 OPERATIONS

This section describes the basic operation of the printer.

1.4.1 Control Panel

The control panel is equipped with two non-lock type push buttons and three LED indicators, and operations of each button and LED indicator are described below.

Buttons

LOAD/EJECT

CLEANING

LED Indicators

PAPER OUT (Red)

INK OUT (Red)

POWER (Green)

Figure 1-7. Control Panel

1.4.1.1 Buttons

‰ Normal Operation

Button

LOAD/EJECT

CLEANING

Table 1-10. Control Panel - Normal Operations

Operation

Pressed less than

3 sec.

Pressed for 3 sec.

Pressed less than

3 sec.

Pressed for 3 sec.

Function

•

Loads or ejects the paper.

•

When the carriage is at the ink-cartridge replace position, return the carriage to the home position.

•

Starts the ink-cartridge replace operation and the carriage moves to the ink-cartridge replace position.

•

Starts the cleaning operation.

•

When the printer is in “Ink Low”, “Ink Out” or

“No ink cartridge” status, the printer moves the carriage to the ink-cartridge replace position.

•

When the carriage is at the ink-cartridge replace position, return the carriage to the home position.

1-12

Rev. A

Chapter 1 Product Descriptions

‰

Power-On Operation

Table 1-11. Control Panel - Power-on Operations

[1 st

button]

Hold down at power on

Button

[2 nd

button]

Pressed within

3 sec. after power on.

∗

2

CLEANING

LOAD/EJECT

LOAD/EJECT

+

CLEANING

-----

-----

LOAD/EJECT

+

CLEANING

∗

1

Function

The printer perform the following after performing the control panel operation in left column.

Self-printing test

Status printing

EEPROM Initialization

Note)

∗

1: Holds down the specified buttons for 10 sec. or more until INK OUT and

PAPER OUT LED starts blinking.

∗

2: After the power on, INK OUT and PAPER OUT LED starts blinking and continue for about 3 sec. “Press within 3 sec. after power on” means to press

2 nd

buttons while these LED are blinking.

‰

Self-test printing:The printer prints the self check test pattern. The printer prints a page at a time and pauses between each page. When the printer is in pause state, press LOAD/EJECT button to resume printing and turn the power off to cancel the self-test printing.

‰

Status printing: The printer prints; Firmware version, ink counter value and a nozzle check pattern. The printer goes to a pause state after print one page. To cancel the status printing, turn the power off while the printer is in pause state.

‰

EEPROM Initialization: Initialize the following addresses of the EEPROM (refer to the

EEPROM address map table in Appendix.)

1AH:

1BH:

Interface selection (00H: Auto)

Interface Wait Time (02H: 2 sec.)

2CH/2DH: Counter A (Protect counter) (00H)

70H - 73H: 4-color head non-installation time (00H)

78H - 7BH: Power Off Timer (00H)

Rev. A

1-13

EPSON Stylus Color 300 Service Manual

1.4.1.2 LED Indicators

The LED indicators of the control panel shows the various printer status as below.

Table 1-12. Control Panel - LED Status Indications

Status

Ink low (printable)

Ink out (not printable)

Paper out

Paper jam

No ink cartridge

No printhead

POWER

ON

ON

ON

ON

ON

ON

Blink

INK OUT

Blink

ON

-----

-----

ON

Blink

(Fast)

-----

PAPER OUT Priority

----Low

-----

ON

Blink

-----

-----

Medium

----High •

Replacing head/ink cartridge

•

Printing

•

During ink sequence

EEPROM initialization

Button(s) is pressed at power on

•

Carriage control error

•

Fatal error

Maintenance request

ON

Blink

Blink

Blink

(Fast)

Blink

Blink

(Fast)

ON

Blink

(Fast)

Blink

Blink

(Fast)

ON

Blink

(Fast)

Highest

1-14

Rev. A

Chapter 1 Product Descriptions

1.5 MAIN COMPONENTS

The EPSON Stylus Color 300 is composed of the following main components:

‰

Printer mechanism

‰

Main control board (C224 MAIN Board)

‰

Power Supply Unit (C160 PSB/PSE Board : Same as EPSON Stylus Color 200 / Stylus

200)

‰

Control Panel

‰

Housing

1.5.1 Printer Mechanism

The mechanical design of printer mechanism for EPSON Stylus Color 300 is basically the same with EPSON Stylus Color 200/Stylus 200, and is equipped with the detachable 4colors one-piece printhead unit.

1.5.2 Main Control Board (C224 MAIN Board)

The main control board (C224 MAIN board) is controlled by the M37721S2BFP 16bit CPU

(IC2) which driven with 25MHz clock speed. The E05B49KA custom gate array (IC1) controls the memories (ROM and RAM), a built-in parallel interface circuit and the printhead drive voltage generation circuit.

1.5.3 Power Supply Unit (C160 PSB/PSE Board)

The power supply unit of EPSON Stylus Color 300 is exactly the same with EPSON Stylus

Color 200/Stylus 200.

1.5.4 Housing

In accordance with the control panel design change, the upper housing is also changed from EPSON Stylus Color 200/Stylus 200.

Rev. A

1-15

CHAPTER 2

OPERATING PRINCIPLES

2.1 OVERVIEW ...................................................................................... 2-1

2.1.1 PRINTER MECHANISM ......................................................... 2-1

2.1.1.1 Printhead Unit .............................................................. 2-1

Chapter 2 Operating Principles

2.1 OVERVIEW

Since most of the printer mechanism design and the electrical circuits of EPSON Stylus

Color 300 remains the same with EPSON Stylus Color 200/Stylus 200, this chapter only describes the difference in the printer mechanism.

2.1.1 PRINTER MECHANISM

Based on the printer mechanism for EPSON Stylus Color 200/Stylus 200, a newly designed one-piece 4-color printhead is incorporated on EPSON Stylus Color 300. This section only describes the printhead.

2.1.1.1 Printhead Unit

The printhead unit for EPSON Stylus Color 300 is a new design printhead and has both black and color (CMY) nozzles in one unit. The nozzle arrangement of the printhead is shown below.

16/360"

(1.1289mm)

104/360"

(7.3378mm)

104/360"

(7.3378mm)

16/360"

(1.1289mm)

#31 #M11

#B30 #C11 #Y11

#29

#B3

#B2

#B1 #M1

Rev. A

#C1 #Y1

16/360"

(1.1289mm)

Viewed from the back of the printhead

Figure 2-1. Printhead (Nozzle Configuration)

To compensate the electrical characteristics variation of the piezo-electric element used on each printhead unit, the electrical characteristics is measured at the factory and the measured characteristic level is designated as an ID of the printhead. The ID of printhead is recorded on each printedhead by changing a signal line pattern connection on the head drive circuit of the printhead. The main control circuit detect the status of this signal line and determines the printhead ID and adjust the head drive voltage level according to the printhead ID. Therefore, no head ID registration to EEPROM is required on this printer.

2-1

CHAPTER 3

DISASSEMBLY AND ASSEMBLY

3.1 OVERVIEW ...................................................................................... 3-1

3.1.1 Upper Case Removal............................................................. 3-1

3.1.2 C224 MAIN Board Removal .................................................. 3-2

Chapter 3 Disassembly and Assembly

3.1 OVERVIEW

This section describes procedures for disassembling and assembling the main components of EPSON Stylus Color 300. Since the most of components are the same with EPSON

Stylus Color 200/Stylus 200, this manual only describes procedures unique to this printer.

3.1.1 Upper Case Removal

1. Remove the sheet guide from the printer.

2. Move the paper select lever to the backward position, then remove one screw

(CBP/M2x6) securing a knob to the paper select lever.

3. Open the printer cover, then remove five screws (one CBB/M4x6 and four CBP/M4x12) securing the upper case to the bottom case.

4. Remove the upper case by lifting it upward.

Knob

(paper select lever)

CBP (M4x12)

CBP (M2x8)

Printer Cover

Upper Case

Figure 3-1. Upper Case Removal

CBB (M3x8)

Rev. A

3-1

EPSON Stylus Color 300 Service Manual

3.1.2 C224 MAIN Board Removal

1. Remove the upper case. (See Section 3.1.1).

2. Remove five screws (CBB/M3x6); four screws fixing the shield plate directly to the C224

MAIN Board and one screw fixing the metal bracket to the shield plate.

3. Disconnect all cables connected to the C224 MAIN Board and remove the C224 MAIN

Board.

CBB (M3x6) CBB (M3x6)

Bracket

SHIELD PLATE

3-2

C224 MAIN BOARD

Figure 3-2. C224 MAIN Board Removal

Rev. A

CHAPTER 4

ADJUSTMENT

4.1 OVERVIEW ...................................................................................... 4-1

4.1.1 Adjustment Tools .................................................................. 4-1

4.1.2 Applicable Repair .................................................................. 4-1

4.1.3 Adjustment Program ............................................................. 4-2

4.1.3.1 Zig-Zag Adjustment ..................................................... 4-2

4.1.3.2 Bi-D Adjustment........................................................... 4-2

4.1.3.3 Head Angle Adjustment ............................................... 4-2

4.1.3.4 RESET Fucntion .......................................................... 4-3

Chapter 4 Adjustment

4.1 OVERVIEW

This section describes procedures for adjustments which required when the printer is disassembled and assembled for repair.

CAUTION

„

Once the ink cartridge is removed from the printer before ink-end, never re-use it.

„ For adjustment and testing, always replace the ink cartridge to new one designed exclusively for service:

Description:

Code:

4.1.1 Adjustment Tools

The table below lists the tools required to make adjustment on EPSON Stylus Color 300.

Tool

Thickness Gauge Set #F518

*1

Adjustment Program

Name: CLR300.EXE

Table 4-1. Tools for Adjustment

Code Applicable Adjustment

B776702201

•

Platen Gap Adjustment

-----

•

Head Angle Adjustment

•

Bi-D Adjustment

•

Zig-Zag Alignment Adjustment

•

RESET function for:

*Ink counter

*Initial charge flag

*Protect counter (Waste ink counter)

4.1.2 Applicable Repair

An appropriate adjustment have to be made according to the type of repair performed.

Repair

C224 MAIN board is replaced *1

Printhead is replaced *2

Printer mechanism is replaced *2

•

Table 4-2. Applicable Adjustment

CR Motor or timing belt is replaced

•

Carriage assembly is disassembled

Applicable Adjustment

•

Zig-Zag Alignment Adjustment

•

Bi-D Adjustment

•

Zig-Zag Alignment Adjustment

•

Head Angle Adjustment

•

Zig-Zag Alignment Adjustment

•

Bi-D Adjustment

•

Bi-D Alignment

Note) *1:

*2:

Replace the ink cartridge and the waste ink pad to new one and reset ink counter and protect counter.

Replace the ink cartridge to new one and reset initial charge flag and ink counter.

Rev. A

4-1

EPSON Stylus Color 300 Service Manual

4.1.3 Adjustment Program

The adjustment program CLR300.EXE is specifically designed for use with the EPSON

Stylus Color 300 and the following adjustments can be made with this program.

‰

Zig-Zag Adjustment

‰ Bi-D Adjustment

‰

Head Angle Adjustment

‰

Reset operation

To start making adjustment with the program, execute the program on the PC that connected to the target printer and follow the instruction shown on the PC monitor.

CAUTION

Since the mechanism design is the same with the EPSON Stylus Color 200, refer to the service manual for EPSON Stylus Color 200, at Chapter 4 Adjustment, for the detail procedures.

4.1.3.1 Zig-Zag Adjustment

This adjustment is required to specify the print timing control parameter that determines the ink injection timing for each nozzle. If the adjustment is wrong, a vertical line printed within single print pass become jagged.

Verify the check pattern printed by the program and specify the parameter until the check pattern become aligned most properly.

4.1.3.2 Bi-D Adjustment

This adjustment is required to specify the control parameter that determines the print timing in bi-directional printing. If the adjustment is wrong, the print position at each print direction is not aligned each other.

Verify the check pattern printed by the program and specify the parameter until the check pattern become aligned most properly.

4.1.3.3 Head Angle Adjustment

This adjustment is required when the printhead is replaced to new one. Every dot line

(raster) need to be parallel each other and the angle of the printhead, at which the printhead is fixed on the carriage assembly, determines a parallel level.

The program prints the check pattern to judge the angle of printhead, and is the angle is not correct, move the head angle adjust lever located at the right hand side of the carriage assembly to a position with which the printed pattern become parallel.

4-2

Rev. A

Chapter 4 Adjustment

4.1.3.4 RESET Fucntion

Since various ink system management information are stored in EEPROM on the main board, the information integrity need to be kept even after the combination of the printer mechanism and the main board is altered. Therefore, if any of the component (main board, printer mechanism or the printhead) is replaced to new one, reset the appropriate information (counter value or flag).

Type of Repair

C224 MAIN board is replaced

Printer Mechanism is replaced

Printhead is replaced

Table 4-3. RESET Operation

Required Operation

•

Ink Cartridge replacement

•

Waste ink pad replacement

•

[RESET] Ink counter

•

[RESET] Protect counter

•

[RESET] Initial charge flag

•

[RESET] Ink counter

•

Ink Cartridge replacement

•

[RESET] Initial charge flag

•

[RESET] Ink counter

•

Ink Cartridge replacement

Rev. A

4-3

CHAPTER 5

TROUBLESHOOTING

5.1 OVERVIEW ...................................................................................... 5-1

5.1.1 Unit Repair - C224 MAIN Board ............................................ 5-1

Chapter 5 Troubleshooting

5.1 OVERVIEW

Since the printer mechanism and the power supply unit are remains the same with EPSON

Stylus Color 200/Stylus 200, this chapter describes only the checkpoints on the main control circuit; C224 MAIN Board.

5.1.1 Unit Repair - C224 MAIN Board

The table below provides various symptom, likely causes and checkpoint, relating to the

C224 MAIN Board.

Symptom

Printer does not operate at all.

Condition

CPU does not operate.

Cause

Reset IC (IC9) is defective

Checkpoint

Check the signal waveform at pin 6 of

IC9:

Solution

Replace IC9

Oscillator

(CR2) or CPU

(IC2) is defective

Is the signal waveform output from CR2 correct at pin 37/38?

Correct:

Replace IC2

Incorrect:

Replace CR2

ASIC does not operate.

ASIC (IC1) is defective

Is the signal waveform at pins 52 of IC1 correct?

Replace IC1

Rev. A

5-1

EPSON Stylus Color 300 Service Manual

Symptom

Self-test printing is abnormal.

Condition

No printing.

Cause

PWM signal is not output.

Checkpoint

Is PWM signal waveform correct at pin

140 of IC1?

Solution

Replace IC1

Head drive voltage generation circuit does not operate.

Check waveform of the signal VO: Replace any defective components:

Q1/2/4/7/8 or

QM1/3/4/5/6/7/8

Carriage does not operate normally.

Drive signals are not output correctly.

CPU (IC2) is defective

Is the signal waveform correct at pin 5/6 of IC2?

Replace IC2

CR Motor driver (IC8) is defective

Is the signal waveform correct at pin

3/6/18/21 of IC8?

Correct:

Replace CR

Motor

Incorrect:

Replace IC9

5-2

Rev. A

Chapter 5 Troubleshooting

Symptom

Paper does not advance normally.

Condition

Drive signals are not output correctly.

Cause

CPU (IC2) is defective

Checkpoint

Is the signal waveform correcr at pin 7/8 of IC2?

Solution

Replace IC2

PF Motor driver (IC16) is defective

Is the signal waveform correct at pin

14/17/20/23 of IC16?

Correct:

Replace PF

Motor

Incorrect:

Replace IC16

Rev. A

5-3

CHAPTER 6

MAINTENANCE

6.1 OVERVIEW ...................................................................................... 6-1

6.1.1 Maintenance Request............................................................ 6-1

Chapter 6 Maintenance

6.1 OVERVIEW

This section describes the maintenance points and the procedures specific for EPSON

Stylus Color 300.

WARNING

„ If ink gets in your eyes, flush them immediately with water and seek medical

„ attention.

„ Disconnect the printer from the power source when you clean inside the printer.

CAUTION

„

Once the ink cartridge is removed from the printer before ink-end, never re-use it.

„

For adjustment and testing, use the ink cartridge designed exclusively for service:

Description:

Code:

6.1.1 Maintenance Request

The printer counts total amount of ink drained to the waste ink pad and this information is stored in the EEPROM on the main board, as the protect counter A value for ink system operation management. When the counter value reaches the predetermined value, the printer detects it as “Maintenance Request” error and displays the error status with the control panel LED indicators (see Table 1-12 at Chapter 1, Section 1.4.1.2 LED Indicators).

When this error displayed, replace the waste ink pad to new one and reset the counter value with the procedure shown below.

Turn the printer ON while hold down the buttons: continue for 3 seconds

LOAD/EJECT

CLEANING

"POWER" LED

"INK OUT" LED

"PAPER OUT" LED

Press the buttons within

3 seconds from power ON, and kept them pressed until

"INK END", "PAPER OUT"

LEDs starts blinking:

LOAD/EJECT

CLEANING

"POWER" LED

"INK OUT" LED

"PAPER OUT" LED

Figure 6-1. “Maintenance Request” Error Clear Operation

Rev. A

6-1

APPENDIX

A.1 OVERVIEW......................................................................................A-1

A.2 EEPROM Address Map..................................................................A-2

A.3 CIRCUIT DIAGRAM (C224 MAIN BOARD)....................................A-4

Appendix

A.1 OVERVIEW

The main board of EPSON Stylus Color 300 is C224 MAIN BOARD and each connector and its pin assignment are the same with the main board for EPSON Stylus Color 200.

Therefore, refer to the service manual for EPSON Stylus Color 200 for the details.

Rev. A

A-1

EPSON Stylus Color 300 Service Manual

A.2 EEPROM Address Map

The table below shows the addresses of EEPROM and the contents stored at each address.

Address Data

Table A-1. EEPROM Address

Value

00 - 01H (Reserved)

02H Market (Model)

-----

0: World

1: Japan

2 - 4: Custom

03 - 11H Customized model name

•

Strings counter

•

Strings of model field for device

12 - 13H Bi-D Adjustment data

ID

-36

≤

n

≤

+36 (unit: 1/1440 inch)

14 - 15H (Reserved)

16H Fire period adjustment

-----

-4

≤

n

≤

+10 (unit: 0.08sec.) data

17H

18H

(Reserved)

EEPROM Status

-----

00H: Used (once initialized) other: Not used (to be initialized)

19H

•

THICK paper direction

•

Auto LF

•

Print direction

•

Network I/F mode

Bit 7:

Bit 3:

<Thick paper>

0: Index card (Portrait)

1: Envelope (Landscape)

<Auto LF>

0: OFF

1: ON

Bit 2: <Network I/F mode>

0: OFF

1: ON

Bit 1/0: <Print direction>

0/0: Bi-D

0/1: Uni-D

1/1: Auto

1AH Interface selection

1BH

1CH

1DH

1EH

1FH

Interface wait time

(Reserved)

Reply printer status control data

Non-smear print mode

(Reserved)

00H: Auto

02H: Parallel I/F

03H: Serial I.F

02H: 2sec.

03H: 3sec.

-----

Bit 0: <function>

0: ON

1: OFF

Bit 0: <function>

0: Normal

1: Non-smear print mode

-----

Factory

Default

00H

00H

00H

00H

*2

02H

*2

-----

00H

*1

00H

*1

00H

00H

82H

00H

-----

A-2

Rev. A

Appendix

Address

Table A-2. EEPROM Address (continued)

Data Value

20H CR Motor initial phase

21H (Reserved)

22 - 23H YMC Accumulated time

24 - 25H Counter D

26 - 27H Counter E

(Initial charge flag)

28 - 29H Counter R

(Cap flushing counter)

2A - 2BH Ink status

2C -

2DH

Counter A

(Protect counter)

2E - 2FH Counter C

(Number of power ON)

-----

00H:

01H:

Initial charge required

Initial charge done

30 - 35H Fire dot counter K

(Black )

36 - 3BH Fired dot counter Y

(Yellow)

3C - 41H Fired dot counter M

(Magenta)

42 - 47H Fired dot counter C

(Cyan)

1 count = 1ng

1 count = 1ng

1 count = 1ng

1 count = 1ng

48 - 6BH (Reserved) -----

6C -6FH Head vacuuming time A 0 to FFFFFFFFH (unit: 10 min.)

Start from 1992/01/01 00:00

70 - 73H 4-color head uninstallation time

74 - 77H

78 - 7BH

7CH

7DH

7EH

7FH

(Reserved)

Power off time

0 to FFFFFFFFH (unit: 10 min.)

Start from 1992/01/01 00:00

-----

0 to FFFFFFFFH (unit: 10 min.)

Start from 1992/01/01 00:00

----(Reserved)

VH adjust value (KR) (10000 x KR)

VH adjust value (Vad-L) (1000 x VerrAD(L))

VH adjust value (Vad-H) (1000 x VerrAD(H))

00H

00H

00H

00H

00H

00H

01H

00H

00H

00H

00H

*2

00H

00H

*2

-----

-----

-----

-----

Factory

Default

*1

-----

00H

00H

00H

00H

00H

00H

Rev. A

A-3

EPSON Stylus Color 300 Service Manual

A.3 CIRCUIT DIAGRAM (C224 MAIN BOARD)

A-4

Rev. A

EPSON OVERSEAS MARKETING LOCATIONS

EPSON AMERICA, INC.

20770 Madrona Ave.

P.O. Box 2842

Torrance, CA 90509-2842

Phone:(800) 922-8911

Fax: (310) 782-5220

EPSON DEUTSCHLAND GmbH

Zülpicher Stra

β e 6,

40549 Düsseldorf Germany

Phone:(0211) 56030

Telex: 8584786

EPSON AUSTRALIA PTY. LTD.

70 GIBBES STREET, CHATSWOOD 2067

NSW.

Phone:2-9903-9000

Fax: 2-9903-9177

EPSON HONG KONG LTD.

Rooms 4706-10, 47/F

China Resources Bldg.,

26 Harbour Road, Wanchai, Hong Kong

Phone:2585-4300

Fax: 2827-7083

EPSON ITALIA S.p.A.

V. le F. lli Casiraghi 427

20099 Sesto S. Giovanni

MI, Italy

Phone:2-262331

Fax: 2-2440750

EPSON PORTUGAL, S.A.

EPSON UK LTD.

Campus 100, Mayland Avenue,

Hemel Hempstead, Herts,

HP2 7TJ, U.K.

Phone:(+44) 01442 61144

Fax: (+44) 01442 227227

EPSON FRANCE S.A.

68 bis, rue Marjolin

92300, Levallois-Perret, France

Phone:33.1.40.87.37.37

Telex: 610657

EPSON SINGAPORE PTE. LTD.

No.1 Temasek Avenue #36-00

Millenia Tower, Singapore 039192

Phone:(065) 33 77 911

Fax: (065) 33 41 185

EPSON TAIWAN TECHNOLOGY &

TRADING LTD.

10F, No.287 Nanking E. Road, Sec.3,

Taipei, Taiwan, R.O.C.

Phone:(02) 717-7360

Fax: (02) 712-9164

EPSON IBERICA S.A.

Av. de Roma, 18-26

08290 Cerdanyola del Valles

Barcelona, Spain

Phone:582.15.00

Fax: 582.15.55

R. do Progresso, 471, 1° Perafita

4460 Matosinhos, Portugal

Phone:(02) 996 14 02

Fax: (02) 996 14 11

SEIKO EPSON CORPORATION

HIROOKA OFFICE / Imaging & Information Products Division

80 Harashinden, Hirooka

Shiojiri-Shi, Nagano-Ken

399-07 Japan

EPSON

SEIKO EPSON CORPORATION